J. CITEK, D. NEMECKOVA, L. STADNIK, and R. STUPKA, “Ovarian diseases in Holstein dairy cows, factors determining their occurrence and impact on reproduction traits and breeding costs”, Indian J of Anim Sci, vol. 87, no. 7, pp. 810–813, Jul. 2017, doi: 10.56093/ijans.v87i7.72163.